Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater
The main objective of this paper is to study the effect of new air backwash on dead-end ultrafiltration of seawater with a pilot at semi-industrial scale (20 m<sup>3</sup>/day). To control membrane fouling, two different backwashes were used to clean the membrane: classical backwash (CB)...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-04-01
|
| Series: | Membranes |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0375/10/4/78 |
| _version_ | 1797569936116154368 |
|---|---|
| author | Clemence Cordier Tarik Eljaddi Nadjim Ibouroihim Christophe Stavrakakis Patrick Sauvade Franz Coelho Philippe Moulin |
| author_facet | Clemence Cordier Tarik Eljaddi Nadjim Ibouroihim Christophe Stavrakakis Patrick Sauvade Franz Coelho Philippe Moulin |
| author_sort | Clemence Cordier |
| collection | DOAJ |
| description | The main objective of this paper is to study the effect of new air backwash on dead-end ultrafiltration of seawater with a pilot at semi-industrial scale (20 m<sup>3</sup>/day). To control membrane fouling, two different backwashes were used to clean the membrane: classical backwash (CB) and new air backwash (AB) that consists of injecting air into the membrane module before a classical backwash. To evaluate the efficiency of AB and CB, a resistance in series model was used to calculate each resistance: membrane (R<sub>m</sub>), reversible (R<sub>rev</sub>) and irreversible (R<sub>irr</sub>). The variation of the seawater quality was considered by integrating the turbidity variation versus time. The results indicate clearly that AB was more performant than CB and frequency of AB/CB cycles was important to control membrane fouling. In this study, frequencies of 1/5 and 1/3 appear more efficient than 1/7 and 1/9. In addition, the operation conditions (flux and time of filtration) had an important role in maintaining membrane performance—whatever the variation of the seawater quality. |
| first_indexed | 2024-03-10T20:18:17Z |
| format | Article |
| id | doaj.art-57e74040ad894d459e87dd1d88eed3c1 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T20:18:17Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-57e74040ad894d459e87dd1d88eed3c12023-11-19T22:22:19ZengMDPI AGMembranes2077-03752020-04-011047810.3390/membranes10040078Optimization of Air Backwash Frequency during the Ultrafiltration of SeawaterClemence Cordier0Tarik Eljaddi1Nadjim Ibouroihim2Christophe Stavrakakis3Patrick Sauvade4Franz Coelho5Philippe Moulin6Aix Marseille Univ, CNRS, Centrale Marseille, M2P2-EPM (UMR 7340), 13545 Aix en Provence, FranceAix Marseille Univ, CNRS, Centrale Marseille, M2P2-EPM (UMR 7340), 13545 Aix en Provence, FranceAix Marseille Univ, CNRS, Centrale Marseille, M2P2-EPM (UMR 7340), 13545 Aix en Provence, FrancePlateforme Expérimentale Mollusques Marins, Station Ifremer de Bouin, Polder des Champs, 85230 Bouin, FranceSuez—Aquasource, 20, Avenue Didier Daurat, CEDEX 04, 31029 Toulouse, FranceSuez—Aquasource, 20, Avenue Didier Daurat, CEDEX 04, 31029 Toulouse, FranceAix Marseille Univ, CNRS, Centrale Marseille, M2P2-EPM (UMR 7340), 13545 Aix en Provence, FranceThe main objective of this paper is to study the effect of new air backwash on dead-end ultrafiltration of seawater with a pilot at semi-industrial scale (20 m<sup>3</sup>/day). To control membrane fouling, two different backwashes were used to clean the membrane: classical backwash (CB) and new air backwash (AB) that consists of injecting air into the membrane module before a classical backwash. To evaluate the efficiency of AB and CB, a resistance in series model was used to calculate each resistance: membrane (R<sub>m</sub>), reversible (R<sub>rev</sub>) and irreversible (R<sub>irr</sub>). The variation of the seawater quality was considered by integrating the turbidity variation versus time. The results indicate clearly that AB was more performant than CB and frequency of AB/CB cycles was important to control membrane fouling. In this study, frequencies of 1/5 and 1/3 appear more efficient than 1/7 and 1/9. In addition, the operation conditions (flux and time of filtration) had an important role in maintaining membrane performance—whatever the variation of the seawater quality.https://www.mdpi.com/2077-0375/10/4/78ultrafiltrationseawater treatmentair backwashfouling control |
| spellingShingle | Clemence Cordier Tarik Eljaddi Nadjim Ibouroihim Christophe Stavrakakis Patrick Sauvade Franz Coelho Philippe Moulin Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater Membranes ultrafiltration seawater treatment air backwash fouling control |
| title | Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater |
| title_full | Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater |
| title_fullStr | Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater |
| title_full_unstemmed | Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater |
| title_short | Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater |
| title_sort | optimization of air backwash frequency during the ultrafiltration of seawater |
| topic | ultrafiltration seawater treatment air backwash fouling control |
| url | https://www.mdpi.com/2077-0375/10/4/78 |
| work_keys_str_mv | AT clemencecordier optimizationofairbackwashfrequencyduringtheultrafiltrationofseawater AT tarikeljaddi optimizationofairbackwashfrequencyduringtheultrafiltrationofseawater AT nadjimibouroihim optimizationofairbackwashfrequencyduringtheultrafiltrationofseawater AT christophestavrakakis optimizationofairbackwashfrequencyduringtheultrafiltrationofseawater AT patricksauvade optimizationofairbackwashfrequencyduringtheultrafiltrationofseawater AT franzcoelho optimizationofairbackwashfrequencyduringtheultrafiltrationofseawater AT philippemoulin optimizationofairbackwashfrequencyduringtheultrafiltrationofseawater |